22095809 has 2 divisors, whose sum is σ = 22095810. Its totient is φ = 22095808.

The previous prime is 22095779. The next prime is 22095817. The reversal of 22095809 is 90859022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16200625 + 5895184 = 4025^2 + 2428^2 .

It is a cyclic number.

It is not a de Polignac number, because 22095809 - 2¹⁶ = 22030273 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22095889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11047904 + 11047905.

It is an arithmetic number, because the mean of its divisors is an integer number (11047905).

Almost surely, 2^22095809 is an apocalyptic number.

It is an amenable number.

22095809 is a deficient number, since it is larger than the sum of its proper divisors (1).

22095809 is an equidigital number, since it uses as much as digits as its factorization.

22095809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 22095809 is about 4700.6179381013. The cubic root of 22095809 is about 280.6101024824.

The spelling of 22095809 in words is "twenty-two million, ninety-five thousand, eight hundred nine".